This is the first time in more than a decade that it has increased, according to the company's Drug Testing Index™ analysis of 8.5 million workplace drug tests. The data were released Sept. 8. Sep 10, ...

SECAUCUS, N.J., Sept. 2, 2025 /PRNewswire/ -- The percentage of employees in the general U.S. workforce testing positive for fentanyl in random drug tests far exceeded those in pre-employment testing, ...

Amid Widespread Recruiting and Retention Challenges, Drug Positivity Increases in Post-Accident Tests at a Faster Rate Than Pre-Employment Tests for Cocaine, Marijuana, Opiates and Oxycodones SECAUCUS ...

According to a new Quest Diagnostic Study analyzing workplace drug test results in 2021, employers saw the highest rate of positive drug test results in twenty years. The study was based on more than ...

The rate of substituted or invalid drug tests — an indication of tampering to hide drug use — rose more than six-fold in 2023 versus the prior year, according to a Quest Diagnostics analysis of 9.8 ...

As a result, drug misuse testing is being used more effectively to screen workers and job candidates, maintain a safe workplace, and adhere to stringent legal requirements. Urine drug testing is also ...

Annual Drug Testing Index reveals fifth straight year of increases in detection rate of amphetamine and heroin; marijuana positivity increases 47 percent since 2013 in oral fluid testing Following ...

DENVER — Recreational marijuana users in Colorado reportedly are causing a surge in the sale of synthetic urine. As employers continue to try to catch drug-using employees, workers are getting smarter ...

According to a new Quest Diagnostics study, employers saw the highest rate of positive workforce drug test results since 2003. As expected, marijuana was the most detected drug, including in states ...

SECAUCUS, N.J. - Quest Diagnostics (NYSE:DGX), a $20.2 billion healthcare diagnostics leader currently trading near its 52-week high at $179.88, announced Thursday the launch of a new pharmacogenomic ...